Effectiveness of enteral immunization against typhoid fever with chemical Vi and O antigens.
D000818:Animals; D000941:Antigens; D004926:Escherichia coli / Q000276:immunology; D007109:Immunity; D007422:Intestines; D051379:Mice; D012486:Salmonella typhimurium / Q000276:immunology; D014435:Typhoid Fever / Q000276:immunology*
D000941:Antigens